Type-writing machine.



H. MIKKELSEN.

TYPE WRITING MACHINE. APPLICATION FILED 054;. 4. 191a.

Paten wiAug. 17, 1915.

2' SHEETS-SHEET I.

H. MIKKELSEN.

TYPE WRITING MACHINE.

APPLICATION FILED 050.4.1913.

Patentefl Au 17, 1915.

2 SHEETS4SHEET 2.

msmm

} s'rarus ion 1 HARRY MIKKELSEN, OF CHICAGO, ILLINOIS, ASSIGNOR TUNDERWOOD TYPEWRITER COMPANY, OF NEW YORKIN. Y., A CORPORATION OFDELAWARE.

TYPE-WRITING MACHINE.

To all whom it may concern:

Beit known that I, HARRY MIKKELSEN, a citizen of the United States,residing in Chlcago, in the county of Cook and State of Illinois, haveinvented certam new and useful Improvements in Type-Writing Machines, ofwhich the following is a specification.

This invention relates to collating boards provided upon the papercarriages of typewriting machines having revoluble platens. It iscustomary to collate the work-sheets 1n various relative positions uponthe board,, and after such collating, to carry the sheets from the boardaround the platen to the printing position, without disturblng therelative arrangement of the sheets.

One of the objects of the present invention is to improve the means forcarrylng the collated sheets around the platen and mai ntaining them intheir proper relationship. To this end, I provide at the ends of theplaten flexible endless bands, each of which has a series ofsheet-impaling studs, and each of which also has a series of holes tofit studs or sprockets on the platen itself. By this means, the bandsare caused to travel in unison, and moreover any liability of the bandsslipping or creeping edgewise upon the platen is avoided by theirengagement with the platen studs or sprockets. The other ends of theendless bands run over an idle roll, which may also be providedwithsprockets to prevent edgewise creeping of either band at this point; itbeing desirable to maintain the bands with the impaling studs thereon inexact relationship to each other at all times. The bands are kept tautindependently of each other by springs, one at each end of the idle rollover which the bands run.

Another feature of the invention resides in the means for attaching theboard-supporting frame to a supplemental carriage. The arms which extenddown from the' board-supporting frame are :made extensible and connectedby universal joints to plates, and the plates are fixed to thesupplemental carriage. By reason of the extensibility of the arms andthe adjustability of the plates, necessity of accurate and carefulmanufacture and fitting is avoided.

Another feature of the invention is the provision of a wire or thinsupport upon which to hang the carbon sheets. This wire Specification ofLetters Patent.

- relationship to the Patented Aug. 117', 11915.

Application filed December 4, 1913. Serial No. 804,595.

extends across from one ofthe stud-bands to sheets, and especially whenremoving some of the work-sheets others.

Other features inafter appear.

In the accompanying drawings, Figure 1 is a front perspective view of apart of a paper carriage of an Underwood front-strike typewritingmachine, showing the sheet board applied thereto and illustrating myimprovements. Fig. 2 is a sectional View to illustrate the universaljoint for attaching the sheet board to the supplemental carriage. Fig. 3is a sectional side elevation of an Underwood typewriter carriage withmy improvements applied thereto. Fig. 4c is a front elevation toillustrate the connection of the collating device to the typewritercarriage. Type-bars l strike against the front side of a cylindricalplaten 2, which is revolubly mounted bymeans of an axle 3 in a carriage4, which is propelled by a spring (not shown) in the usual manner andcontrolled by the usual escapement mechanism, which is operated by thekeys that actuate the typears 1, as is well known.

The sheets to be collated are laid upon a board 5, which may extendupwardly and rearwardly from the platen; the side margins of the sheetsoverlying endless flexible thin metal bands 6, one at each end of theplaten 2; the bands looping around the platen and extending up along thecollating board, and at their upper portions running over an idle rollor pulley 7. The perforatlons in the side margins of the work-sheetsengage studs 8, which are arranged in rows on the opposite bands 6,preferably along their inner edges. The bands may be separated so as toexpose sufiicient space on the platen between them to form the desiredwriting surface, although the bands may, if desired, be of very thinmetal and hug closely .to the platen, and themselves afford a suitablebacking for the paper to receive the type impressions.

The studs 8 in one and replacing them by and advantages will herestuds 8on the other band; and in order to preserve this relationhand must beara fixed wardly and rearwardly from sheets platen,

synchronously with the other,

studs or sprock ets 9, which fit into perforations 10, each band havinga line of these perforations ex preferably along its outer edge. ofstuds or sprockets it follows that one band 6 must travel relationship-be on one band and those on always preserved. may fit so closely in theholes 10 of the band tending for its entire length, Both sets 9 beingfixed to the and hence the impaling studs 8, the other band is Saidsprockets 9 also tween the as to prevent sidewise creeping of the latteralong the platen; and,

if desired, the idle roll 7 may also be provided with similar sprockets11 for the same purpose.

The collating board 5, which supports the flexible bands which tocollate the sheets, by upper and lower cross bars are bent down table onmay be supported 12, 13, which at their opposite ends at 1 1 6 andserves as a and connected by rods 15 which extend upthe typewritercarriage 4:, being connected thereto at their lower ends by screws 16. aThe idle'roll 7 may be carried upon extensions or rods 18, whichtelescope into the ends of the rods 15, and are constantly pressedoutward by springs 18*, so as to keep a tension on the stud bands 6.

From the rods 15 extend rearwardly arms 19 to a carriage 20, which maybe in the form of a grooved carried by upp which are held arms 2 1extendi slide, running on balls er and lower tracks 21, 22, by brackets23, carried upon ng upwardly and rearwardly from the typewriter framing2 1. The arms 19 may be sufiiciently separated to permit the bands 6 topass between them. Each arm 19 may be composed of two portions,

one of them, 25, telescoping into the other,

and carrying at its, rear end a ball 26,

which forms part of a ball-and-socket joint; the other part thereofbeing carried upon a plate 27, which-is attached by screws 28 to thesupplementary carriage 20. The extensible part 25 by a set screw of thearm19 may be secured 29, Fig. 1. The extensible support .25 permitstruing of the sheet board relatively to the platen,

at 26 permits the plate 27 to be turned to fit the front joint and theuniversal surface of'the carriage 20,

notwithstanding the shifting or adjustment of the part 25 relatively to19. The rods or upper ends by may extensions 18 may also be joined attheir a cross bar 17. The rods 18 also carry an apron 30 to guide thesheets around the idle roll 7 and down hehind the collating board, tothe usual guideplate or paper to the printing shelf 31, which conductsthe beneath and up in front of the platen point.

A support 32 upon which to hang carbon sheets, tending across is hereinshown as a wire or rod exfrom one to the other of the vfrom the platen,

stud-bands 6, and attached to the bands by 2 within said rods, sprlngspressing said extensions outwardly, sheet-carrying bands,

running upon the platen, and means carried by said rods to be engaged bysaid bands, whereby the bands are held taut.

2. The combination with a carriage and a revoluble platen thereon, of asheet-collatingboard extending away from the platen, rods mounted uponthe carriage and extending within the and portions of the away from theplaten and supporting said sheet-collating-board, extensions telescopedwithin said rods, springs pressing said extensions outwardly,sheet-carrying bands running around the platen, revoluble means carriedby said rods over which said bands run, and whereby. the bands are heldtaut, and a sheet deflector carried by saidextensions.

3. The combination with a carriage and a revoluble platen thereon, of asheet-collatingboard extending upwardly and rearwardly from the platen,sheet-carrying devices extending from said platen along said board, asupplementary carriage, trackstherefor, and supports extending from saidsheet-collating-board structure to said supplementary carriage andincluding extensible. arms to permit the board to be trued or adjustedrelatively to the platen. l

4. The combination with a carriage and a revoluble platen thereon, of asheet-collating board extending upwardly and rearwardly sheet-carryingdevices extending from said platen along said board, a supplementarycarriage, tracks therefor, and supports extending from saldsheetcollating-board structure to said supplementary carriage andincluding extens1ble arms to permit the board to be trued or adjustedrelatively to the platen; said arms connected to said supplementarycarriage by universal joints. v

5. The combination with a carriage and a revoluble platen thereon, of asheet-collatingboard extending away from the platen,'rods telescopedmeans and down back of the tensions outwardly, sheet-carrying bandsrunning around the platen, revoluble means carried by said rods overwhich said bands run, and whereby the bands are held taut, and a devicecarried by said extensions to deflect the sheets around said revolublesheet-collatingboard.

6. The combination with a carriage and a revoluble platen thereon, of asheet-collatingboard extending away from the platen, rods mounted uponthe carriage and extending away from the platen and supporting saidsheet-collating-board, extensions telescoped within said rods, springspressing said extensions outwardly, sheet-carrying bands running aroundthe platen, revoluble means carried by said rods over which said bandsrun, and whereby the bands are held taut, a device carried by saidextensions to deflect the sheets around said revoluble means and downback of the sheet-collating-board, and a paper guiding shelf or plate onthe carriage to receive the sheets from said deflector and conduct themforwardly around the under side of the platen.

7. The combination with a revoluble platen and a sheet-collating boardextending obliquely upward therefrom, of flexible bands extending fromthe ends of the platen along said sheet-collating board, and each havingstuds to engageperforations in the side margins of the work-sheets, saidstuds on one band having a fixed relation or registry with they saidstuds on the other band, and studs or sprockets secured upon the ends ofthe platen said bands having perforations or means to engage said platenstuds or sprockets and cause the bands to move in unison and hold thesheet-engaging studs on one band in register with the sheet-engaginstuds on the other band.

8. 'l he combination with a revoluble platen and a sheet-collating boardextending obliquely upward therefrom, of flexible bands extending fromthe ends of the platen along said sheet-collating board, and each havingstuds to engage perforations in the side margins of the work-sheets,said studs on one band having a fixed relation or registry with the saidstuds on the other band, and studs or sprockets secured upon the ends ofthe platen; said bands having perforations or means to engage saidplaten studs or sprockets, and cause the bands to move in unison andhold the sheet-engaging studs on one band in register with thesheet-engaging studs-on the other band; said perforations being arrangedalong the outer edges of the bands, and said sheet-engaging studs beingarranged along the inner edges or margins of the bands.

9. The combination with a revoluble platen and a sheet-collating boardextending obliquely upward therefrom, of flexible rations to bandsextending from the ends of the platen along said sheet-collating board,and each having studs to engage perforations in the side margins of thework-sheets, said studs on one band having a fixed relation or registrywith the said studsor sprockets secured upon the ends of the platen;said bands having perforations or means to engage said platen studs orsprockets, and cause the bands to move in unison and hold thesheet-engaging studs on one band in register with the sheet-engagingstuds on the other band; said per forations being arranged along theouter edges of the bands, and said sheet-engaging studs being arrangedalong the inner edges or margins of the bands, and an idle roll overwhich said bands run, said idle roll also having sprockets to engagesaid perfoprevent edgewise creeping of the bands.

10. The combination with a revoluble platen and a sheet-collating boardextending therefrom, of flexible bands extending from the ends of theplaten along said sheetcollating board, said bands running over the endsof the platen and each having studs to engage perforations in themargins of work-sheets, the studs on one band havin a fixed relation orregistry with the studs on the other band, and inter-engaging means onsaid bands and platen forming a positive means to maintain the studs onone band in register with the studs on the other band; saidinter-engaging means also serving as a means to prevent creeping ormovement of the bands relatively to the platen in a directionlongitudinally of the platen.

11. The combination with a revoluble platen and a sheet-collating boardextending therefrom, of flexible bands extending from the ends of theplaten along said sheetcollating board, said bands running over the endsof the platen and each having studs to engage perforations in themargins of worksheets, the studs on one band having a fixed relation orregistry with the studs on the other band, inter-engaging means on saidbands and platen forming a positive means to maintain the studs on oneband in register with the studs on the other band; said inter-engagingmeans .also serving as a means to prevent creeping or movement of thebands relatively to the platen in a direction longitudinally of theplaten, and a guide roll at the end of the collating board remote fromthe platen and over which the work-sheets are carried by said bands,said roll provided with means cooperating with said means on the bandsto prevent creeping or displacement of the bands along said roll in thedirection of its length.

12. The combination with a revoluble platen, of thin flexible endlessbands running over the ends of the platen and hav studs onthe otherband,

"to engage perforations in the side margins of work-sheets, the studs onone band being arranged in a fixed relation or registry with RES thestuds on the other band, said bands and the platen having cooperatingmea-nslforming a positive driving connection between the platen and saidbands for causing the latter to movein unison and maintain the studs onone band in register with those on the other band, and means forming ayielding support for said guiding roll and maintaining said bands taut.

a guiding roll at.

' wardly 13. The combination with a carriage and a revoluble platenthereon, of a sheet-collating board extending upwardly and rearfrom theplaten, flexible bands extending from the ends of the platen along saidsheet-collating board, each band having studs to engage perforations inthe side margins of work-sheets, and a rod or support extendingtransversely from one band to the other and connected to said bands,said support forming a means upon which folded carbon sheets may behung.

. HARRY MIKK'ELSEN. Witnesses: Bison C. 'lnonrn, FREDK. RnoKnL.

